New Orleans Regarded as one of the most unique cities in the USA, New Orleans is widely known for its distinctive French Creole culture, cuisine, and architecture as well as jazz music and the annual Mardi Gras celebration. Situated in southeastern Louisiana, New Orleans is the state’s largest city and a major US seaport. Devastated by heavy flooding from Hurricane Katrina in 2005, New Orleans is now mostly recovered and remains one of the best places to visit in the USA.